Here is another installment of exTRAPaganza, our Thursday over-the-top trap series.
The room has a glass floor that looks down on a deep, lava filled hole. The room suddenly rises, throwing the PC’s to the ceiling when it stops. The ceiling, of course, is full of spikes. Then it drops suddenly, and stops abruptly, dropping the PC’s back on the floor, which, of course, shatters, dropping the PC’s down the shaft and into the lava.